(1999, Ralph Fiennes, Julianne Moore, Stephen Rea)

Set in London in the 1940s. A roofbox RT ghosts through the background of several scenes, too far away to identify; on one occasion it's too close to identify:

A sequence on the seafront at Brighton has two Duple-bodied Bedford OBs; James Annetts, who was driving 1949-built Mervyns Coaches HOD75, confirms the second is blue and cream GWV101, built in 1951.
As can be divined from these screen captures, neither is particularly clearly seen.